Abstract: This invention is directed to a unique method of moving earth and an earth moving device which can be attached at the front end of an endless track vehicle and used for moving earth into a ditch or excavation. The apparatus for moving earth comprises: (a) earth contacting blade; (b) an endless track mounted in association with the earth contacting blade for moving the earth in a direction lateral to the direction of travel of the earth contacting blade; and (c) a vehicle for moving blade (a) and track (b) above in co-operation with one another. The method of moving earth comprises advancing an earth moving blade through a continuous ridge of earth in a manner such that the speed of advance of the advancing earth moving blade is synchronized with the speed of movement of a laterally travelling earth moving track so that substantially all of the earth is moved laterally in the direction of travel of the laterally travelling earth moving track.

Abstract: A moving doppler radar unit capable of separating the incoming doppler signal into its respective frequency components by means of frequency translation techniques and fixed frequency filters is disclosed. When the radar platform vehicle and target vehicle are both moving, the received doppler signal is a complex wave having frequency components related to the ground speed of the platform vehicle and the relative speed of the platform and target vehicles with respect to each other.

Abstract: In a dual wheel arrangement for vehicles, a hub adapter serves to mount a second wheel beside the first wheel. Combination nut and bolt elements are threaded onto the lug bolts for the first wheel. The hub adapter is received on projecting bolt portions of the nut and bolt elements and is secured by nuts. The second wheel is mounted on an outer flange of the hub adapter.

Abstract: The envelope feeder apparatus of the present invention is suitable for use with conventional mail sorting machines. The envelope feeder apparatus is capable of receiving a supply of envelopes on a feeder magazine which is incorporated into the body of the apparatus. The individual envelopes are picked off in succession at a feeder station by means of a suction device which operates in combination with a pair of conveying belts having a friction surface facing the incoming envelopes. The suction device acts through holes in the conveying belts to draw the lead envelope against the friction surface of the conveying belts for separation of the lead envelope from the rest of the supply. The separated envelope is then conveyed through an arcuate path and introduced into a transport channel which is positioned parallel to the feeder magazine of the apparatus.

Abstract: A mixing machine for tumbling a rack which carries a plurality of volumetric glassware tubes containing chemical solutions. The machine includes a stand which rotatively supports a tumbler box adapted to closely receive the rack. The tumbler box includes a floor and a lid which engage the ends of the volumetric tubes to prevent them from shifting in the tumbler box and to hold rubber stoppers in place in the tubes. The tumbler box is rotated by an electric motor having a timing switch and a cam switch that stops the box in an upright position.

Abstract: An apparatus for measuring phase and amplitude jitter and simultaneously and audibly counting and monitoring transient excursions of two linear bar-chart type readouts calibrated in degrees and modulation percents and which are capable of displaying jitter measurements. The transient excursions in the form of phase hits, gain hits, drop outs and impulse noise are simultaneously counted in parallel registers and means are provided for visually indicating the cumulative real time count total of each register in numerical display. The method of evaluating parameters affecting voiceband data transmission includes simultaneously displaying phase and amplitude jitter components onto linear bar-chart displays and separately deriving the information for each of said displays and providing continuous and sequential illumination on each display encompassing the range of fluctuations from the jitter detectors.